DOER Research: Acoustic Camera Particle Image Velocimetry (PIV)
This project investigates the use of a 3D acoustic camera to acquire two-dimensional velocity vector fields from PIV analysis. An experiment was performed to quantify the two-dimensional velocity field of a simple laboratory flow using PIV with both 3D acoustic camera images and standard optical camera images, along with ADV transect measurements, to determine whether the acoustic camera PIV results are accurate. The success of this project will lead to an entirely new technique to measure flow velocities in turbid environments in the field, one that yields substantially more information than the technologies currently available (i.e., two-dimensional velocity vector fields) and allows velocity gradient based hydrodynamic signals to be directly estimated.
POC: Dr. David Young (David.L.Young@erdc.dren.mil) and Dr. Brian McFall (Brian.C.McFall@erdc.dren.mil)
Materials fabrication and dredging assessment scenarios using low-cost 3D printing applications
A customizable, fit-for-purpose monitoring technology resulting from this research will provide insight to down-select DM sites potentially needing remediation measures vs. areas where CoC bioavailability is of lesser concern. We will expand low cost 3D printing technology to be amenable to on-site, on-vessel, on-demand materials for remediation (adsorption, destruction) and monitoring to down select and reduce cost of analyzing traditional and emerging contaminants of concern and field deploy the technology to address scalability. USACE would realize cost savings by reducing: (1) imprudent evaluations; or (2) dredging to remove low risk materials.
POC: Alan Kennedy (Alan.J.Kennedy@usace.army.mil)
The animations presented here are general schematics of dredgeheads in operation under water. They are provided for educational use or for use in presentations, etc.
The videos presented here show various aspects of a dredge operation. They are provided for educational use or for use in presentations, etc.